Engine/Transmission (1994 - 1998) 190 Theromstat

[LHastings]

Does anybody know a brand and part no. for a 190 degree thermostat for a 98 12v. All I can find is 180 degree. They make a 190 for 98. 5 that has a o-ring around the edge but I don't think I can make it work. Last year I got one from Cummins but their books could not tell me what value it was. When I put it in my engine run even cooler. The temperature gauge just barely make it in the normal range when the outside temperature is 19 degrees. I think the one from Cummins is 160 degree.

 

[budnate]

Join the club, I am also in the middle of figureing out why the truck is running to cold all of the sudden... ... . you have 2 options, buy the one on a online parts store for $100 claims to be a 190..... or go to Napa and buy a stat for a '73 dodge charger 440, $10, it will be a 195..... after all the neg reports on the 180 stat I am not going to run it, if I change stats I am dropping in the 440 stat with a small hole drilled in it.

my truck used to warm up and run solid at 190 and not hunt like the other guys report.

you want a cummins 190- 3928499 stat but they are all gone..... I have looked high and low for 2 days non around that I can find... .

have you pulled your stat and looked at it? I ask as I assumed mine was hung open and when I pulled it it looked fine and was closed tight, I ran it in the kitchen pot with my gauge and it cycled twice perfectly, cracking around 170 full open at 190 or so... . ran cool water in the pan and it closed nice... ... threw it back in and still not making heat after a drive on the highway... . clutch fan is the next check for me mine feals fine and spins how i think it should, has nice resistance by hand and spins for about 3 seconds after shuttdown from a idle and stops... I am blocking the radiatore tonight after work and see what happens.

fyi, saw a trick on the net, you dont have to pull the belt, just pull the lower bolt on the alt and tip it back towards the battery


Peace, B.

 

[JR]

I cant help you with t stat numbers but i also run a 190 on my truck and even in 30 degree weather it will not even run close to temp without my winter fronts. I understand thats not what your after just something to keep in mind when you pop a hotter stat in and still cant maintain temp

 

[Bob4x4]

The low mark on my 94 temp gauge looks like it should be 160 by looking at the hash marks. It is not it is an actual 180 degrees